2012•Journal of Power SupplyRequires access

Application and Research of EMI Filter Technology in Switching Power Supply

Guo Pan-feng

Abstract

Switching power supply is widely used in power electronic systems for its high reliability and stable output. Meanwhile, it should be recognized that the self-generated electromagnetic has a profound effect on the whole system. In order to suppress conducted interference generated by switching power supply, a cascaded technology about the integrated EMI filter was proposed and a simulation was carried out for the power converter output waveform. Experimental results show that the proposed cascaded technology about the integrated EMI filter has a good inhibition on the harmonic.

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Key concepts: EMI, Electromagnetic interference, Electronic engineering, Switched-mode power supply, Engineering, Power (physics), Filter (signal processing), Reliability (semiconductor)